Electronic device and control method thereof

Abstract

An electronic device includes a display panel, a first control element, and a second control element. The display panel has a first display area and a second display area. The display panel displays in a first display mode or a second display mode. The first control element controls the first display area. The second control element controls the second display area. The second control element includes a first sub-control unit and a second sub-control unit. When the display panel displays in the second display mode, the first sub-control unit is disabled, and the second sub-control unit is enabled.

What is claimed is: 
     
         1 . An electronic device, comprising:
 a display panel, having a first display area and a second display area; wherein the display panel is configured to display in a first display mode or a second display mode;   a first control element, configured to control the first display area; and   a second control element, configured to control the second display area; wherein the second control element comprises a first sub-control unit and a second sub-control unit;   wherein when the display panel displays in the second display mode, the first sub-control unit is disabled, and the second sub-control unit is enabled.   
     
     
         2 . The electronic device as claimed in  claim 1 , wherein the first sub-control unit of the second control element comprises a digital-to-analog converter. 
     
     
         3 . The electronic device as claimed in  claim 1 , wherein when the display panel displays in the second display mode, the second sub-control unit generates a black screen signal. 
     
     
         4 . The electronic device as claimed in  claim 1 , further comprising:
 a timing controller, electrically connected to the display panel; wherein,   when the display panel displays in the first display mode, the timing controller is configured to output a first image signal to the display panel;   when the display panel displays in the second display mode, the timing controller is configured to output a second image signal to the display panel;   the first image signal is different from the second image signal.   
     
     
         5 . The electronic device as claimed in  claim 4 , wherein the resolution of the first image signal is the same as the resolution of the second image signal. 
     
     
         6 . The electronic device as claimed in  claim 4 , wherein the resolution of the first image signal is different from the resolution of the second image signal. 
     
     
         7 . The electronic device as claimed in  claim 4 , further comprising:
 an image processor, electrically connected to the timing controller, configured to send an image signal to the timing controller;   wherein the image signal comprises the first image signal and the second image signal.   
     
     
         8 . The electronic device as claimed in  claim 4 , further comprising:
 a third control element, electrically connected to the timing controller, configured to output a control signal to the timing controller;   wherein the timing controller outputs a sub-control signal to the second control element according to the control signal, so that the first sub-control unit is disabled and the second sub-control unit is enabled in the second display mode.   
     
     
         9 . The electronic device as claimed in  claim 1 , wherein the first control element comprises a receiving interface, a digital-to-analog convertor, a switch, and a buffer. 
     
     
         10 . The electronic device as claimed in  claim 1 , wherein the first sub-control unit in the second control element comprises a receiving interface. 
     
     
         11 . The electronic device as claimed in  claim 1 , wherein the second sub-control unit in the second control element comprises a switch, a buffer, and a black voltage generator. 
     
     
         12 . The electronic device as claimed in  claim 4 , wherein the timing control includes a transmitting interface and a register, and the transmitting interface comprises an enable terminal. 
     
     
         13 . The electronic device as claimed in  claim 12 , wherein when the display panel displays in the second display mode, the register outputs a control signal to the enable terminal of the transmitting interface, so that the transmitting interface is turned off. 
     
     
         14 . The electronic device as claimed in  claim 7 , further comprising:
 a memory, electrically connected to the image processor;   wherein the image processor stores half of resolution data of the image signal in the memory.   
     
     
         15 . The electronic device as claimed in  claim 11 , wherein the black voltage generator generates a black screen signal. 
     
     
         16 . The electronic device as claimed in  claim 15 , wherein when the display panel displays in the second display mode, the black screen signal is output to the second display area of the display panel. 
     
     
         17 . A method for controlling an electronic device, comprising:
 providing the electronic device; wherein the electronic device comprises a display panel, a first control element, and a second control element; the second control element comprises a first sub-control unit and a second sub-control unit; the display panel comprises a first display area and a second display area; the display panel displays in a first display mode or a second display mode; and   performing display steps to cause the display panel to display, comprising:
 using the first control element to control the first display area; 
 using the second control element to control the second display area; 
   wherein when the display panel displays in the first display mode, the display steps, comprise:
 enabling the first sub-control unit, and disabling the second sub-control unit; 
   wherein when the display panel displays in the second display mode, the display steps, comprise:
 disabling the first sub-control unit, and enabling the second sub-control unit. 
   
     
     
         18 . The method as claimed in  claim 17 , further comprising:
 detecting whether there is a person sitting in a seat corresponding to the second display area;   causing the display panel to display in the first display mode when it is detected that there is the person sitting in the seat;   causing the display panel to display in the second display mode when it is detected that there is no person sitting in the seat.   
     
     
         19 . The method as claimed in  claim 17 , further comprising:
 setting the electronic device to an energy-saving mode so that the display panel displays in the second display mode.   
     
     
         20 . The method as claimed in  claim 17 , further comprising:
 outputting a first image to the display panel when the display panel displays in the first display mode; and   outputting a second image to the display panel when the display panel displays in the second display mode;   wherein the first image signal is different from the second image signal.